Selling 13 varieties of hot bread-based snacks (price: £3.95) as well as breakfast bites, fresh soups, salads and desserts that can be eaten in or taken away (amazing concept!), the outlet can be found in Ludgate Hill, in the capital’s financial district.

Its flagship snack is The Original 1762, a sandwich containing hot roast beef, cheddar and horseradish sauce.

According to Orlando, the pair are hoping the sandwich shop will eventually be in a position to compete with high-street staples like Pret a Manger and Eat.

The Montagus already own 15 stores across the US as part of their chain, which is backed by Planet Hollywood founder Robert Earl.

The fourth Earl of Sandwich – also named John Montagu – is credited with inventing the humble sandwich way back in the 18th century when he sought something convenient to nibble on while he gambled.